 |
|
|
|
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Hey Guys,
This is my first post. I've just discovered povray and have enjoyed playing
around with it for a couple weeks now. But, there is one scene I'm putting
together that has me pulling my hair out trying to figure out what's going
on. I'm trying to take a "bite" out of a "glass" object (union of several
nested objects) with a difference statement and a julia fractal (the julia
surface really gives it a broken-solid-glass look). Everything has worked
fine up till this point; here is the bit of code:
difference {
object {paperweight translate <-2,0.9,-4>}
julia_fractal
{ <0.1,-0.3,-0.2,-0.2>
quaternion sqr
max_iteration 8
precision 50
pigment {
bozo scale 0.4 rotate y*85
color_map {
[0.2 color <0,0,1,0.5>]
[0.4 color <1,1,1,1>]
} }
finish {ambient 0.3 reflection 0.2 ior 1.01}
rotate y*-20
scale 1.5
translate <-1.5,6.4,-4>
}
}
The problem is when the julia fractal is subtracted the lower half of the
object disappears (see attached image; both non-spoon objects should be egg
shaped), but the color shadow and reflection remains. I've
had a look at FAQs and done things like increase max_trace_level, but I
can't seem to find a way around it. Sorry if this is an obvious newby
mistake
and thanks for any pointers.
- Floyd
Post a reply to this message
Attachments:
Download 'julia_missing2.jpg' (195 KB)
Preview of image 'julia_missing2.jpg'
|
|
| |
| |
|
|
|
|
| |
| |
|
|
On Fri, 5 Nov 2004 11:49:44 EST, "Floyd" <nomail@nomail> wrote:
> julia
nice name for that bluish smiled ghost on the desk
ABX
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
>
> The problem is when the julia fractal is subtracted the lower half of the
> object disappears (see attached image; both non-spoon objects should be egg
> shaped), but the color shadow and reflection remains. I've
> had a look at FAQs and done things like increase max_trace_level, but I
> can't seem to find a way around it.
>
I noticed when moving the fractal around the the missing edge moved with it
and appeared box-like. I tried this, with no idea if it would work, and it
did!
Bounding=off
It renders much slower now. When it's done I'll post a new version.
- Floyd
Post a reply to this message
|
|
| |
| |
|
|
From: A Luchuk
Subject: Re: missing part of object with julia fractal
Date: 6 Nov 2004 00:34:35
Message: <418c626b@news.povray.org>
|
|
|
| |
| |
|
|
Im trying to do something similiar, Im subrtacting an isosurface from a
box filled with water. I was originally planning to fill the bubbles
with media, but I still havnt worked out all the details of the
reflecting/refracting surfaces. since the surface of the bubble is a
very comples distortion of the images of the inside of the bubble and
outside its hard to see the media.
so far my biggest confusion has been with choice of object to make
hollow. I know that the bubbles are hollow, but does the water box need
to be hollow in order for the media to work inside the bubbles?
attached are two bubbles, the one on the right has a negative ior. the
bubbles are hollow, but the box is not. the media is
next...{bubble_(1_-1 ior).jpg)
the bubble here is only part of image, im going to attempt ro tender
this voernight, and see if there are any more
changes...{bulbble_(max_trace10).jpg)
Post a reply to this message
Attachments:
Download 'bubble(1_-1-ior).jpg' (123 KB)
Download 'bubble(max_trace10).jpg' (33 KB)
Preview of image 'bubble(1_-1-ior).jpg'
Preview of image 'bubble(max_trace10).jpg'
|
|
| |
| |
|
|
|
|
| |
| |
|
|
"Floyd" <nomail@nomail> wrote:
>
> I tried this, with no idea if it would work, and it
> did!
>
> Bounding=off
>
> It renders much slower now. When it's done I'll post a new version.
>
Here is the next stage with broken glass and whole objects. Can the
bounding region be increased rather than turned off completely?
- Floyd
Post a reply to this message
Attachments:
Download 'double_yolk_midnight_breakfast_6-trim.jpg' (443 KB)
Preview of image 'double_yolk_midnight_breakfast_6-trim.jpg'
|
|
| |
| |
|
|
|
|
| |
| |
|
|
On Sat, 06 Nov 2004 10:15:03 -0500, Floyd wrote:
> "Floyd" <nomail@nomail> wrote:
>>
>> I tried this, with no idea if it would work, and it did!
>>
>> Bounding=off
>>
>> It renders much slower now. When it's done I'll post a new version.
>>
>>
> Here is the next stage with broken glass and whole objects. Can the
> bounding region be increased rather than turned off completely? - Floyd
According to Povray documentation from the website, yes, with the
"contained by box { }" or "contained by sphere { }" keyword.
See http://www.povray.org/documentation/view/3.6.1/300/
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
On Sat, 06 Nov 2004 20:27:46 +0200, JS wrote:
> On Sat, 06 Nov 2004 10:15:03 -0500, Floyd wrote:
>
>> "Floyd" <nomail@nomail> wrote:
>>>
>>> I tried this, with no idea if it would work, and it did!
>>>
>>> Bounding=off
>>>
>>> It renders much slower now. When it's done I'll post a new version.
>>>
>>>
>> Here is the next stage with broken glass and whole objects. Can the
>> bounding region be increased rather than turned off completely? - Floyd
>
> According to Povray documentation from the website, yes, with the
> "contained by box { }" or "contained by sphere { }" keyword.
>
> See http://www.povray.org/documentation/view/3.6.1/300/
Ups... It's "contained_by", not "contained by".
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
